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| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-09 12:44:59 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-09 12:44:59 +0000 |
| commit | a34701c9dbe56c168a6c80d9368e8ae56d004310 (patch) | |
| tree | 91e4185562fe3e96b03d4e888f1f1d690759dd6c /gcc/tree-vect-data-refs.c | |
| parent | fe52088f5e1a864aaa5bf142106376480ff1fbc4 (diff) | |
| download | gcc-a34701c9dbe56c168a6c80d9368e8ae56d004310.tar.gz | |
PR tree-optimization/40071
* tree-vect-data-refs.c (vect_create_data_ref_ptr): Build a ref-all
pointer if the original data reference doesn't conflict with the
created vector data reference. Fix long line.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@152585 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index bc18f0272f8..c3570d31948 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -2369,9 +2369,20 @@ vect_create_data_ref_ptr (gimple stmt, struct loop *at_loop, vect_ptr_type = build_pointer_type (vectype); vect_ptr = vect_get_new_vect_var (vect_ptr_type, vect_pointer_var, get_name (base_name)); - /* If any of the data-references in the stmt group does not conflict - with the created vector data-reference use a ref-all pointer instead. */ - if (STMT_VINFO_DR_GROUP_SIZE (stmt_info) > 1) + + /* Vector types inherit the alias set of their component type by default so + we need to use a ref-all pointer if the data reference does not conflict + with the created vector data reference because it is not addressable. */ + if (!alias_sets_conflict_p (get_deref_alias_set (vect_ptr), + get_alias_set (DR_REF (dr)))) + { + vect_ptr_type = build_pointer_type_for_mode (vectype, ptr_mode, true); + vect_ptr = vect_get_new_vect_var (vect_ptr_type, vect_pointer_var, + get_name (base_name)); + } + + /* Likewise for any of the data references in the stmt group. */ + else if (STMT_VINFO_DR_GROUP_SIZE (stmt_info) > 1) { gimple orig_stmt = STMT_VINFO_DR_GROUP_FIRST_DR (stmt_info); do @@ -2380,10 +2391,11 @@ vect_create_data_ref_ptr (gimple stmt, struct loop *at_loop, if (!alias_sets_conflict_p (get_deref_alias_set (vect_ptr), get_alias_set (lhs))) { - vect_ptr_type = build_pointer_type_for_mode (vectype, - ptr_mode, true); - vect_ptr = vect_get_new_vect_var (vect_ptr_type, vect_pointer_var, - get_name (base_name)); + vect_ptr_type + = build_pointer_type_for_mode (vectype, ptr_mode, true); + vect_ptr + = vect_get_new_vect_var (vect_ptr_type, vect_pointer_var, + get_name (base_name)); break; } |